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Article Dans Une Revue Inorganic Chemistry Année : 2023

Structure and Magnetic Properties of Pseudo-1D Chromium Thiolate Coordination Polymers

Alexander S. Filatov
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Ie-Rang Jeon
John S Anderson
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Résumé

The synthesis, structure, and magnetic properties of two novel, pseudo-one-dimensional (1D) chromium thiolate coordination polymers (CPs), CrBTT and Cr(2)BDT(3), are reported. The structures of these materials were determined using X-ray powder diffraction revealing highly symmetric 1D chains embedded within a CP framework. The magnetic coupling of this chain system was measured by SQUID magnetometry, revealing a switch from antiferromagnetic to ferromagnetic behavior dictated by the angular geometrical constraints within the CP scaffold consistent with the Goodenough-Kanamori-Anderson rules. Intrachain magnetic coupling constants J(NN) of -32.0 and +5.7 K were found for CrBTT and Cr(2)BDT(3), respectively, using the 1D Bonner-Fisher model of magnetism. The band structure of these materials has also been examined by optical spectroscopy and density functional theory calculations revealing semiconducting behavior. Our findings here demonstrate how CP scaffolds can support idealized low-dimensional structural motifs and dictate magnetic interactions through tuning of geometry and inter-spin couplings.
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Licence : CC BY NC - Paternité - Pas d'utilisation commerciale
Licence : CC BY NC - Paternité - Pas d'utilisation commerciale

Dates et versions

hal-04016009 , version 1 (17-04-2023)

Identifiants

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Andrew Ritchhart, Alexander S. Filatov, Ie-Rang Jeon, John S Anderson. Structure and Magnetic Properties of Pseudo-1D Chromium Thiolate Coordination Polymers. Inorganic Chemistry, 2023, 62 (6), pp.2817-2825. ⟨10.1021/acs.inorgchem.2c03991⟩. ⟨hal-04016009⟩
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